Skip To Content Go to Table of Contents
Click for DHHS Home Page
Click for the SAMHSA Home Page
 Click for the OAS Drug Abuse Statistics Home Page
Click for What's New
Click for Recent Reports and HighlightsClick for Information by Topic Click for OAS Data Systems and more Pubs Click for Data on Specific Drugs of Use Click for Short Reports and Facts Click for Frequently Asked Questions Click for Publications Click to send OAS Comments, Questions and Requests Click for OAS Home Page Click for Substance Abuse and Mental Health Services Administration Home Page Click to Search Our Site

2002 National Survey on Drug Use & Health:   Detailed Tables

30416

Table 4.1A Numbers (in Thousands) of Persons Who First Used Marijuana During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 797 368 429 18.3 16.2 20.0
1966 698 208 490 20.5 8.5 19.0
1967 1,345 570 775 18.7 24.7 30.0
1968 1,988 747 1,241 19.2 30.9 46.2
1969 2,611 898 1,713 19.5 37.0 65.8
1970 2,906 1,214 1,692 18.6 48.8 71.5
1971 3,001 1,389 1,611 18.0 55.9 69.0
1972 2,863 1,521 1,342 18.7 62.6 49.4
1973 3,673 1,799 1,875 19.0 72.5 76.0
1974 3,587 1,952 1,636 18.3 81.3 67.1
1975 3,476 1,849 1,627 18.2 76.4 68.8
1976 3,621 2,269 1,352 18.2 100.1 55.0
1977 3,437 1,920 1,517 18.7 84.8 62.3
1978 3,488 2,117 1,371 18.2 95.3 61.9
1979 2,971 1,760 1,211 19.1 79.5 49.8
1980 2,633 1,502 1,132 19.2 66.9 48.0
1981 2,730 1,529 1,201 18.4 70.0 57.5
1982 2,443 1,311 1,132 20.3 60.4 41.8
1983 2,250 1,404 846 18.1 63.4 36.8
1984 2,282 1,515 767 17.7 70.8 35.9
1985 2,238 1,418 820 17.4 66.5 41.8
1986 2,079 1,193 886 18.0 58.3 42.7
1987 1,969 1,177 791 18.1 55.7 38.8
1988 1,588 987 601 17.3 48.0 31.8
1989 1,829 1,111 718 17.7 54.5 37.2
1990 1,556 885 671 17.5 42.6 33.7
1991 1,931 1,124 807 18.2 55.0 37.8
1992 2,055 1,170 885 17.4 56.9 46.7
1993 2,155 1,383 772 16.4 66.0 40.8
1994 2,482 1,574 908 16.9 75.9 47.2
1995 2,812 1,777 1,034 16.8 85.3 56.7
1996 2,489 1,587 901 17.0 75.3 47.5
1997 2,807 1,803 1,005 17.2 87.4 53.7
1998 2,613 1,778 836 17.1 86.4 47.5
1999 2,903 1,837 1,065 17.6 90.1 57.4
2000 2,976 2,078 898 16.6 102.4 55.8
2001 2,604 1,741 863 17.1 86.6 49.6
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.2A Numbers (in Thousands) of Persons Who First Used Cocaine During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 98 * * * * *
1966 * * * * * *
1967 * * * * * *
1968 175 * 94 18.6 * 3.7
1969 146 * 121 21.6 * 3.4
1970 258 95 163 18.2 3.7 6.1
1971 480 87 393 21.1 3.4 11.7
1972 375 103 272 19.7 3.9 7.3
1973 578 168 410 20.8 6.3 12.2
1974 912 212 699 22.6 7.9 15.8
1975 1,014 248 766 20.5 9.2 21.4
1976 1,125 200 926 21.5 7.5 26.9
1977 1,164 278 887 21.0 10.4 24.5
1978 1,257 177 1,079 21.5 6.7 28.3
1979 1,252 283 969 20.5 10.9 27.6
1980 1,725 319 1,406 22.3 12.6 32.9
1981 1,660 289 1,371 22.2 11.7 33.0
1982 1,457 333 1,125 22.1 13.6 25.9
1983 1,442 227 1,215 20.9 9.4 37.0
1984 1,396 254 1,141 22.5 10.7 28.4
1985 1,326 263 1,063 22.1 11.1 24.7
1986 1,247 204 1,043 23.9 8.7 23.4
1987 1,087 304 784 22.1 13.0 20.6
1988 1,167 178 989 23.1 7.7 24.3
1989 1,048 160 888 23.4 7.0 23.1
1990 950 169 780 23.8 7.8 17.0
1991 662 173 489 22.0 7.9 11.8
1992 906 161 745 25.3 7.2 13.6
1993 635 126 509 22.3 5.8 13.0
1994 680 174 506 22.3 7.2 12.3
1995 813 223 590 21.5 9.5 15.9
1996 853 303 549 21.1 12.8 14.9
1997 948 273 675 21.1 11.4 19.1
1998 961 319 643 20.7 13.3 18.8
1999 1,083 268 815 21.6 11.1 23.1
2000 1,139 374 765 20.4 15.2 24.0
2001 1,160 353 807 20.8 14.5 22.4
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.3A Numbers (in Thousands) of Persons Who First Used Crack During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 * * * * * *
1977 * * * * * *
1978 140 * 140 22.3 * 3.1
1979 146 * 141 22.6 * 3.2
1980 169 * 111 21.4 * 2.2
1981 161 * 137 21.7 * 3.3
1982 215 * 170 25.1 * 2.3
1983 204 * 175 24.0 * 3.2
1984 279 * 252 23.0 * 4.6
1985 355 52 304 25.9 2.2 4.9
1986 294 * 263 28.0 * 2.9
1987 305 * 265 23.1 * 5.9
1988 381 26 355 27.9 1.0 3.6
1989 390 * 376 24.7 * 7.4
1990 439 25 414 27.9 1.1 4.6
1991 430 59 371 27.0 2.7 4.1
1992 544 49 495 28.8 2.2 4.8
1993 269 31 238 27.4 1.4 3.2
1994 424 54 370 27.9 2.2 4.4
1995 519 49 469 27.7 1.9 7.3
1996 366 75 291 26.2 2.9 3.6
1997 421 70 351 26.1 2.9 5.3
1998 355 93 263 23.9 3.8 5.7
1999 373 65 308 25.3 2.6 5.4
2000 471 101 370 27.1 4.0 6.3
2001 369 91 278 25.8 3.7 4.1
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.4A Numbers (in Thousands) of Persons Who First Used Heroin During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 113 * 101 20.9 * 3.6
1972 96 28 68 20.2 1.1 2.3
1973 202 23 178 22.6 0.8 4.3
1974 246 * 208 20.4 * 6.0
1975 78 * 65 22.2 * 1.6
1976 97 * 83 21.6 * 1.8
1977 118 * 105 21.6 * 2.8
1978 75 * 44 17.5 * 1.3
1979 108 * 93 22.3 * 2.1
1980 * * * * * *
1981 117 * 104 21.3 * 2.5
1982 98 * 89 22.8 * 2.0
1983 75 * 75 24.9 * *
1984 142 * 105 21.8 * 2.0
1985 46 * 45 * * 0.6
1986 93 * 44 19.9 * *
1987 137 * 128 24.0 * 3.1
1988 73 * 73 23.0 * 1.6
1989 73 * 62 23.0 * *
1990 28 * 24 * * *
1991 75 * 75 24.7 * 1.0
1992 75 * 70 25.2 * 1.4
1993 32 8 * 19.4 0.3 *
1994 80 18 62 24.3 0.8 *
1995 122 34 88 24.4 1.2 0.7
1996 107 25 82 23.3 1.1 1.9
1997 117 43 74 21.4 1.8 1.7
1998 185 29 156 23.7 1.2 3.1
1999 120 38 82 24.9 1.5 1.1
2000 129 44 85 20.1 1.6 2.5
2001 144 40 104 23.3 1.6 2.1
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.5A Numbers (in Thousands) of Persons Who First Used Hallucinogens During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 168 46 122 22.9 * 3.6
1967 268 125 142 18.6 5.4 4.5
1968 446 262 183 17.9 11.0 6.6
1969 739 324 414 18.6 12.9 14.4
1970 956 363 593 18.5 14.6 22.1
1971 1,044 471 572 18.4 17.7 19.3
1972 1,035 515 521 17.8 19.5 17.8
1973 947 453 493 18.2 17.0 18.2
1974 1,073 546 527 18.1 20.3 17.9
1975 999 449 551 18.5 17.2 17.8
1976 1,032 568 464 18.0 21.7 15.8
1977 856 393 463 18.8 15.0 15.8
1978 983 406 577 18.2 15.4 20.5
1979 989 531 458 18.1 20.8 14.7
1980 957 380 576 19.0 15.1 17.8
1981 1,039 359 680 19.5 14.8 20.2
1982 964 355 609 21.4 14.4 14.9
1983 801 395 406 18.6 16.4 12.4
1984 692 272 420 20.2 11.5 11.8
1985 809 298 511 19.1 12.5 15.7
1986 795 382 414 19.1 16.4 11.6
1987 828 372 456 19.6 16.1 13.4
1988 893 332 561 19.5 14.8 17.2
1989 713 302 411 19.0 13.8 12.4
1990 712 309 402 19.3 14.2 11.5
1991 784 324 460 18.8 15.0 15.0
1992 706 316 390 19.1 14.2 11.5
1993 891 378 513 19.3 17.1 15.1
1994 961 482 479 18.1 21.5 17.1
1995 1,036 510 526 18.3 22.3 18.5
1996 1,057 492 565 19.8 21.1 19.1
1997 1,175 554 621 19.1 23.5 22.2
1998 1,242 571 671 18.9 23.8 24.0
1999 1,564 701 862 18.7 29.5 32.3
2000 1,686 801 885 18.7 33.4 32.2
2001 1,592 757 835 19.0 31.6 30.1
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.6A Numbers (in Thousands) of Persons Who First Used LSD During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 233 51 182 20.6 * 5.6
1968 428 310 117 17.1 12.9 4.0
1969 568 213 355 18.9 8.4 11.9
1970 772 362 410 17.9 14.5 15.3
1971 821 316 506 19.2 12.2 16.2
1972 884 436 448 17.9 16.8 14.7
1973 855 384 470 18.4 14.5 17.0
1974 838 457 382 17.7 17.3 13.4
1975 789 364 425 18.7 13.9 12.8
1976 597 242 355 18.1 9.2 12.3
1977 676 349 327 18.8 13.2 10.5
1978 706 247 459 18.4 9.4 15.2
1979 706 338 368 17.9 13.0 12.1
1980 759 355 404 18.3 14.1 12.7
1981 826 292 534 19.1 11.9 16.3
1982 667 282 385 20.0 11.3 9.5
1983 638 290 348 18.8 12.0 10.5
1984 584 271 313 18.9 11.4 8.9
1985 610 244 365 20.1 10.3 9.9
1986 547 251 296 19.3 10.7 8.1
1987 543 351 192 18.2 15.1 4.9
1988 615 275 340 18.1 12.2 10.5
1989 576 237 340 19.7 10.7 8.5
1990 595 294 302 19.2 13.5 8.3
1991 656 274 382 18.7 12.8 12.8
1992 641 278 363 18.7 12.9 11.4
1993 611 265 346 19.1 12.2 10.3
1994 781 414 367 18.0 18.3 12.7
1995 725 399 326 17.4 17.5 12.0
1996 863 440 423 18.2 18.7 14.8
1997 823 429 394 18.3 17.9 13.1
1998 809 442 367 18.0 18.6 13.4
1999 877 471 406 18.0 19.6 14.0
2000 958 475 483 18.1 19.6 17.8
2001 606 349 256 17.5 14.3 9.5
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.7A Numbers (in Thousands) of Persons Who First Used PCP During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * 27 * * 0.9 *
1970 190 81 109 18.0 3.2 4.0
1971 202 76 126 18.5 2.9 4.5
1972 398 202 196 19.3 7.6 4.9
1973 407 151 256 19.0 5.7 8.6
1974 431 161 271 18.8 6.0 8.1
1975 402 243 159 17.7 9.2 4.5
1976 534 238 295 19.4 8.9 7.9
1977 463 162 301 19.8 6.1 8.5
1978 461 143 318 20.9 5.4 8.2
1979 366 156 210 18.8 6.0 5.9
1980 272 93 179 20.7 3.5 4.2
1981 271 113 158 19.4 4.5 4.0
1982 209 75 134 19.4 3.0 3.4
1983 196 91 105 18.8 3.7 2.8
1984 128 * 110 20.1 * 3.1
1985 153 47 105 19.4 1.9 2.6
1986 150 50 100 20.1 2.1 2.4
1987 95 * 53 18.7 * 1.3
1988 164 78 86 18.3 3.4 2.3
1989 130 60 69 20.5 2.7 1.5
1990 73 25 47 28.0 1.2 *
1991 86 * 48 20.9 * 1.0
1992 129 36 93 18.9 1.6 3.0
1993 71 34 37 19.2 1.6 *
1994 105 40 64 17.2 1.8 2.1
1995 173 79 93 18.3 3.3 3.1
1996 134 81 53 16.6 3.1 1.7
1997 140 67 73 17.6 2.7 2.5
1998 147 79 68 18.0 3.2 1.9
1999 151 84 67 18.2 3.4 2.3
2000 177 123 53 16.4 4.7 1.8
2001 149 109 40 16.2 4.3 1.3
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.8A Numbers (in Thousands) of Persons Who First Used Ecstasy During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 91 * * * * *
1977 * * * * * *
1978 * * * * * *
1979 47 * * * * *
1980 * * * * * *
1981 * * * * * *
1982 * * * * * *
1983 98 * * * * *
1984 49 * 49 23.4 * 1.2
1985 144 * 120 21.0 * 3.1
1986 133 * 108 21.8 * 2.8
1987 223 * 191 23.3 * 4.7
1988 208 55 154 21.1 2.4 3.8
1989 153 * 114 19.8 * 3.2
1990 204 * 174 23.9 * 3.0
1991 194 * 178 22.4 * 4.2
1992 175 29 147 20.6 * 4.5
1993 168 18 150 24.6 0.8 3.0
1994 238 41 197 22.0 1.8 5.0
1995 361 86 276 21.9 3.6 7.3
1996 360 94 266 26.6 3.9 5.8
1997 567 118 449 22.6 4.9 11.8
1998 789 174 615 21.3 7.0 17.1
1999 1,539 340 1,199 21.8 13.9 33.8
2000 1,942 540 1,402 21.1 21.9 40.8
2001 1,776 590 1,186 21.1 24.2 33.3
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.9A Numbers (in Thousands) of Persons Who First Used Inhalants During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 86 75 * 13.2 2.9 *
1966 190 190 * 13.8 7.6 *
1967 142 65 * 18.4 1.6 *
1968 237 143 * 17.7 4.7 *
1969 251 173 78 17.0 6.9 *
1970 291 198 94 16.8 7.6 3.1
1971 317 263 54 14.8 9.8 1.9
1972 284 158 126 18.8 5.5 3.3
1973 432 263 169 19.1 9.6 2.6
1974 532 290 243 18.0 9.5 6.5
1975 567 408 159 15.9 13.6 4.9
1976 584 336 248 17.0 12.6 7.9
1977 927 370 557 19.3 13.7 13.8
1978 690 373 317 18.1 13.6 8.9
1979 927 503 424 17.9 19.4 11.6
1980 659 369 290 19.3 15.1 6.4
1981 594 302 292 18.6 11.5 6.9
1982 636 369 267 17.7 14.3 6.2
1983 683 417 266 17.7 15.6 6.9
1984 583 343 240 18.3 13.3 5.4
1985 565 251 314 20.3 10.8 7.1
1986 556 352 204 19.5 15.0 4.4
1987 578 365 213 17.6 14.8 5.6
1988 651 370 281 17.6 15.1 8.2
1989 596 287 310 19.1 11.2 8.5
1990 488 266 222 17.8 10.8 6.8
1991 494 284 210 17.7 12.0 5.3
1992 631 405 226 17.0 17.5 6.5
1993 677 411 266 17.3 18.2 8.2
1994 627 429 198 16.6 17.0 6.3
1995 682 447 235 16.4 17.5 8.3
1996 708 446 262 17.0 15.8 8.1
1997 769 482 287 16.7 16.3 10.0
1998 935 548 386 17.5 19.6 12.7
1999 1,013 642 371 16.5 21.0 12.9
2000 1,247 865 382 16.5 30.8 12.4
2001 1,125 802 323 15.7 32.0 12.1
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.10A Numbers (in Thousands) of Persons Who First Used Pain Relievers During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 73 * * * * *
1967 102 * 53 * * 2.2
1968 391 133 258 19.7 * 10.2
1969 248 155 93 18.5 6.2 2.4
1970 262 128 135 16.2 3.8 4.5
1971 441 248 193 18.3 8.6 5.1
1972 327 130 197 20.3 4.7 4.9
1973 506 202 304 18.7 6.6 9.4
1974 505 182 323 20.1 4.9 7.6
1975 584 202 382 21.5 7.2 8.7
1976 546 232 314 19.3 8.8 8.6
1977 600 134 466 21.3 4.8 11.5
1978 593 233 360 19.0 8.7 9.5
1979 531 253 278 20.2 9.6 6.3
1980 546 177 369 22.7 6.7 5.8
1981 469 117 352 21.4 4.5 8.9
1982 445 180 265 21.1 6.2 5.1
1983 585 110 474 21.8 4.4 10.7
1984 525 111 414 24.3 4.4 7.7
1985 586 133 453 23.1 5.2 8.6
1986 664 129 535 23.2 5.1 11.5
1987 555 156 400 24.5 5.4 6.9
1988 498 130 369 22.3 5.1 7.7
1989 684 180 504 24.0 7.5 9.3
1990 628 118 510 23.9 4.5 10.9
1991 647 192 455 22.6 8.1 10.4
1992 851 213 638 24.4 7.5 10.1
1993 713 200 513 21.2 7.7 12.5
1994 1,020 301 718 23.3 11.7 12.9
1995 973 270 702 22.4 9.8 16.1
1996 1,114 437 677 20.8 16.4 18.7
1997 1,434 513 921 21.8 19.1 22.0
1998 1,738 649 1,089 23.6 23.5 23.1
1999 2,010 754 1,256 22.1 29.4 32.5
2000 2,656 1,028 1,628 23.6 42.5 37.2
2001 2,389 1,124 1,264 20.8 47.9 32.0
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.11A Numbers (in Thousands) of Persons Who First Used Tranquilizers During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 140 * 133 25.5 * *
1968 131 * 99 17.8 * 3.9
1969 303 103 200 20.9 4.1 5.0
1970 193 143 50 18.4 5.7 *
1971 241 135 107 17.9 5.2 3.1
1972 426 155 271 20.0 5.9 7.0
1973 545 160 385 21.6 6.0 8.4
1974 516 239 277 18.2 8.5 8.3
1975 486 165 320 20.3 6.3 7.5
1976 584 286 298 19.2 10.3 7.8
1977 650 235 415 21.5 8.7 9.0
1978 461 139 323 22.2 5.3 7.4
1979 507 179 327 21.4 6.9 7.2
1980 363 116 247 20.0 4.6 5.8
1981 327 91 235 20.8 3.5 6.0
1982 378 95 283 21.7 3.8 5.9
1983 414 53 361 21.4 1.5 8.8
1984 455 82 373 24.5 3.2 5.0
1985 488 82 406 26.9 3.3 6.0
1986 470 72 399 29.6 3.0 5.0
1987 433 66 367 25.4 2.5 5.7
1988 445 61 383 25.3 2.6 6.9
1989 419 87 332 24.8 3.6 5.9
1990 373 86 286 24.4 3.9 5.5
1991 421 37 383 25.4 1.7 6.8
1992 487 78 409 27.8 3.0 6.2
1993 537 133 404 25.2 6.1 5.2
1994 511 125 386 23.7 5.5 8.0
1995 605 171 435 23.2 7.3 8.8
1996 669 193 476 22.4 7.7 10.4
1997 687 200 488 23.2 7.8 11.0
1998 936 258 678 24.8 10.5 13.0
1999 956 315 641 22.1 12.6 13.5
2000 1,308 410 899 23.4 16.5 19.8
2001 1,145 387 759 22.8 15.7 16.1
*Low precision; no estimate reported.
-- Not available.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002.

30416

Table 4.12A Numbers (in Thousands) of Persons Who First Used Stimulants During the Years 1965 to 2001, Their Mean Age at First Use, and Annual Age-Specific Rates of First Use (Per 1,000 Person-Years of Exposure): Based on 2002 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE		 AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 289 * 207 19.5 * 6.9
1966 205 * 180 20.4 * 7.4
1967 203 125 78 20.0 4.9 *
1968 457 143 315 18.1 6.0 12.7
1969 452 225 228 18.4 9.0 8.5
1970 663 257 407 19.4 10.2 13.0
1971 601 183 419 19.5 6.9 13.6
1972 696 304 392 19.0 11.6 13.6
1973 593 229 364 19.2 8.7 11.4
1974 509 194 315 18.7 7.3 10.5
1975 605 303 301 17.9 10.8 8.4
1976 750 345 404 19.7 13.0 11.5
1977 718 290 427 18.8 10.8 12.7
1978 485 246 239 18.3 9.4 7.0
1979 628 257 371 18.7 10.0 10.4
1980 769 301 468 19.0 11.9 14.3
1981 607 159 448 20.6 6.3 11.1
1982 538 226 313 18.9 8.3 8.3
1983 551 168 382 21.8 7.0 6.6
1984 491 191 299 20.2 7.9 6.8
1985 300 119 181 19.6 5.0 4.8
1986 375 150 225 19.2 6.3 6.6
1987 389 128 261 21.8 5.4 5.2
1988 320 108 212 20.9 4.7 4.6
1989 324 95 229 21.0 4.0 6.1
1990 398 154 244 20.3 6.8 5.7
1991 270 100 170 20.5 4.6 4.1
1992 360 160 200 19.9 6.9 4.8